<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="../../css/bootstrap.css">
    <link rel="stylesheet" href="../../bootstrap-icons-1.13.1/bootstrap-icons.min.css">
    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js"></script>
    <script src="../../js/bootstrap.bundle.min.js"></script>
</head>
<body>
<div class="container">
    <div class="card">
        <h3 class="card-title">卡片标题</h3>
        <p class="card-text">卡片内容</p>
        <a href="#" class="card-link">卡片超链接</a>
    </div>
    <div class="card">
      <div class="card-header">页眉</div>
      <div class="card-body">内容</div>
      <div class="card-footer">页脚</div>
    </div>
    <!--设置卡片背景-->
    <div class="card" style="width: 300px">
        <img src="../../png/man.png"class="card-img-top">
        <div class="card-img-overlay">
           <h3 class="card-title">卡片标题</h3>
            <p class="card-text">卡片内容</p>
             <a href="#" class="btn btn-secondary">查看</a>
        </div>

    </div>
</div>
</body>
</html>